9 Bonllwyn, Ammanford, SA18 2EF
About 9 Bonllwyn
9 Bonllwyn is a semi-detached house in Ammanford (SA18 2EF). It has a recorded floor area of 103 m² (around 1109 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (March 2016) shows a D (score 61), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 85), a 2-band jump. The latest certificate is from March 2016, so improvements made since then won't be reflected.
Across 2016–2020, sale prices on this property compounded at 18.2% per year. Today's modelled estimate of £159,000 is 15.2% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£124/sq ft) was about 37.5% above the typical sold price in the postcode. Most recent transfer: December 2020 at £138,000.
Know exactly what you're buying at 9 Bonllwyn
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 07 Mar 2026
EPC Rating
Planning history
9 Bonllwyn has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at 9 Bonllwyn
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
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Sales history & valuation
Sale price has at least doubled since 2016.
£159,000
Modelled from EPC, postcode comparables and a sale-price growth of 18.2% per year over 5 years.
£138,000
Growth on file: 18.2% per year over 5 years.
Sales timeline
17 December 2020Most recent
£138,000
+29.0%over 3 years31 May 2017
£107,000
+71.2%over 1 year22 March 2016
£62,500
Median price across the last 5 sales in SA18 2EF: £138,000 (2025–2023).
Everything we know about 9 Bonllwyn, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Bonllwyn homes
Price per m²
£1,340
Street avg £1,216
Floor Area
103 m²
Street avg 109 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
4.9 t/year
Street avg 5.5 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Blaenau — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.